IPhone jailbreak is legal begun on Monday 26 July 2010

Downgrade from 4.0.2 to 4.0.1 : http://www.coveringweb.com/2010/08/how-todowngrade-ios-402-to-401-for.html
PDF exploit patched from Cydia : http://www.pmptoday.com/2010/08/12/iphone-4-jailbreak-pdf-patch-plugs-pdf-exploit-sans-ios-402-retains-jailbreakme/

As title.
SOURCE: http://www.cnet.com/8301-17918_1-20011824-85.html

The easy way to jailbreak by JailbreakMe:
STEP1:
Reminder: Backup your IPhone first!
STEP2:
On IPhone open the Safari browser and have the URL to www.jailbreakme.com
Your IPhone will be waiting for you to slide to jailbreak.

SOURCE: http://www.techtree.com/India/News/Hassle_free_JailbreakMe_for_iOS_4_Devices/551-112452-580.html
STEP3: Download the WinSCP from http://winscp.net/eng/download.php
Check your IPhone DHCP IP from the WiFi.
Login as root and passowrd: alpine.
SOURCE: http://limitededitioniphone.com/windows-guide-to-using-winscp-with-iphone/comment-page-3/
STEP4: chmod 775 on the /Applications/
STEP5: Create Documents under /private/var/Mobile and then chmod it as 775.
STEP6: Create Documents under /Applications and then chmod it as 775.
(Documents has the captital D)
STEP7:
SOURCE: http://www.minwt.com/?p=2070

How to install ipa files on an iPhone?
======================================
Step 1: After IPhone is jailbroken, go to Cydia > Manage > Sources > Edit > Add http://cydia.hackulo.us/ as a source. > Done.
Step 2: After Hackulo.us is added as a source, search for “AppSync” in Cydia. (Install the version of AppSync that matches your iOS.)
Step 3: In Cydia, search for "Installous". Download and install the app.
Step 4: Reboot your iPhone.
Then, your Iphone is ready with iTune to sync by .ipa

Free Apps by using .ipa file:
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http://iphonecake.com/appcake/
http://www.funkyspacemonkey.com/7-sites-download-cracked-ipa-files-iphone-itouch
http://www.dotdoh.com/?p=657
#1. http://iphonecake.com/appcake/en/i/
#2. http://www.vnmstore.net/
#3. http://www.x8smile.net/
#4. http://www.iphonebot.com/
#5. http://iphone.zoha.vn/
#6. http://iphone.nekem.net/
#7. http://www.iphoneapplist.net/
#8. http://ipagame.com/
#9. http://pirateapps.com/
#10. http://dotdoh.com/ipasearch